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TIL there’s a school in Sweden with compulsary Minecraft lessons

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via reddit.com

XEM58 TIL that in 1935 the U.S. 23rd Bomb Squadron dropped twenty 600-pound bombs in the path of a volcano’s lava flow, thus saving the city of Hilo, Hawaii by diverting the lava away from the city.
Z8BOo Today I Learned that the Burj Khalifa in Dubai is not connected to any sewage system. The refuse is driven away in trucks.
XE1wr TIL the first online transaction was weed bought by Stanford students from MIT students in 1971 or 1972. The deal occurred over the ARPANET, a precursor to the modern internet which was meant for students to use to communicate with other universities.
RJ4a TIL when scientists first realized that American gay men and Africans in France were both suffering from the same disease (AIDS), French researchers sent over a sample to be tested. But a scientist with a grudge against the French institute switched out the sample, setting research back years.
d8JRQ TIL that ancient Romans used urine as mouthwash. Urine contains ammonia, which is one of the best natural cleaning agents on the planet.